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US3281971A
Expired / Lapsed
US
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Built-in elements in shoes
Assignee: Individual
•
Filing: 1965-04-26
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Granted: 1966-11-01
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Expires: 1985-04-26
Abstract
No abstract record available.
Inventors
- 👤 Dorothea M Weitzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:24
CPC Classifications
A; A43; A43B; A43B5/00; A43B5/16; A43B5/1633
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A MULTIPLE PURPOSE SHOE, COMPRISING A THICK SOLE HAVING A CYLINDRICAL CAVITY THEREIN OPEN LATERALLY AT THE BOTTOM OF THE SOLE, A BAR ROTATABLY MOUNTED IN SAID CAVITY WITH A SIDE OF THE BAR EXPOSED AT THE BOTTOM OF THE SOLE, MEANS FOR SELECTIVELY LOCKING THE BAR IN EACH OF A PLURALITY OF FIXED CIRCUMFERENTIAL POSITIONS SO THAT A DIFFERENT SIDE OF THE BAR IS EXPOSED IN EACH OF SAID POSITIONS, AND DIFFERENT RADIALLY OUTWARDLY PROJECTING ELEMENTS ON THE RESPECTIVE SIDES OF THE BAR FOR SELECTIVE PROJECTION OF THE ELEMENTS BEYOND THE SOLE OF THE SHOE, SAID PROJECTING ELEMENTS BEING SHAPED AND ADAPTED TO PROVIDE TRACTION FOR THE SHOE ON SLIPPERY SURFACES.
Claim 2
Dependent Claim
112 words
A MULTIPLE PURPOSE SHOE, COMPRISING A THICK SOLE HAVING A CYLINDRICAL CAVITY THEREIN OPEN LATERALLY AT THE BOTTOM OF THE SOLE, A BAR ROTATABLY MOUNTED IN SAID CAVITY WITH A SIDE OF THE BAR EXPOSED AT THE BOTTOM OF THE SOLE, MEANS FOR SELECTIVELY LOCKING THE BAR IN EACH OF A PLURALITY OF FIXED CIRCUMFERENTIAL POSITIONS SO THAT A DIFFERENT SIDE OF THE BAR IS EXPOSED IN EACH OF SAID POSITIONS, AND DIFFERENT RADIALLY OUTWARDLY PROJECTING ELEMENTS ON THE RESPECTIVE SIDES OF THE BAR FOR SELECTIVE PROJECTION OF THE ELEMENTS BEYOND THE SOLE OF THE SHOE, SAID PROJECTING ELEMENTS BEING SHAPED AND ADAPTED TO PROVIDE TRACTION FOR THE SHOE ON SLIPPERY SURFACES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |